Open AccessCHARACTERISTICS IN MAGNETOCALORIC EFFECT AND MAGNETIC ENTROPY OF NANOMETER BINARY GADOLINIUM ALLOYS
Author(s) -
Yanyan Shao,
Zhengye Xiong,
Zhang Jieli,
Jinxiu Zhang
Publication year - 1996
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.45.1749
Subject(s) - magnetic refrigeration , materials science , nanometre , curie temperature , gadolinium , condensed matter physics , alloy , atmospheric temperature range , magnetic field , thermodynamics , specific heat , entropy (arrow of time) , binary alloy , magnetization , ferromagnetism , metallurgy , physics , composite material , quantum mechanics
Investigations on magnetocaloric effect and magnetic entropy,Curie temperature and specific heat of nanometer binary gadolinium alloys such as Gd-Y,Gd-Tb and Gd-Zn have been carried out under the conditions of a low magnetic-field intensity(1T) and a temperature range within 233313K. Both Curie temperature and specific heat of the prepared nanometer alloys,compared with the bulk materials,show obvious decrease and increase respectively. The nanometer alloy Gd-Y demonstrates an enhanced magnetocaloric effect and magnetic entropy over the same bulk material, which is of importance on researching and developing new materials for magnetic refrigeration. Adiscussion concerning the influence of nanometer structure on magnetic and heat properties mentioned above is given in detail.